What is the speed of the stream if a boat travels?
Speed of stream = 2 km / hr. ∴ Speed of boat in still water = 15 + 2 = 17 km / hr. Q8. A motorboat can travel at 5 km/hr in still water.
What is the speed of the stream?
Boats and Streams Formula
| Upstream | (u−v) km/hr |
|---|---|
| Downstream | (u+v)Km/hr |
| Speed of Boat in Still Water | ½ (Downstream Speed + Upstream Speed) |
| Speed of Stream | ½ (Downstream Speed – Upstream Speed) |
| Average Speed of Boat | {(Upstream Speed × Downstream Speed) / Boat’s Speed in Still Water} |
How do you find the speed of a boat?
Upstream and Downstream – Formula
- Upstream = (u−v) km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
- Downstream = (u+v)Km/hr, where “u” is the speed of the boat in still water and “v” is the speed of the stream.
- Speed of Boat in Still Water = ½ (Downstream Speed + Upstream Speed)
How far should you row in 30 minutes?
For beginners, it would be exceptional to row over 7000 meters in 30 minutes. It would be more expected that you’ll start out closer to the 25th percentile, and move higher up, as your fitness and skills improve. I find the 50th percentile an encouraging and welcoming place to be!
What is boat stream?
Stream- The water that is moving in the river is called a stream. Upstream- When the boat is flowing in the opposite direction of the stream, it is called Upstream. Downstream- When the boat is flowing in the same direction as the stream, it is called Downstream.
How many km can a boatman row against the stream?
A boatman can row 2 km against the stream in 20 minutes and return in 10 minutes. Find the rate of flow of the current. Let x be the speed of man in still water and y be the speed of current.
How long does it take a boatman to go 2 km?
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water? A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
How long does it take the boat to return from the stream?
One way it travels with the stream and on the return it travels against the stream. If the speed of the stream increases by 2 km/hr, the return journey takes 9 hours 20 minutes. What is the speed of the boat in still water?
How much time does it take to row 12 km upstream?
Let the speed in still water = x km/hr. Takes 20 min. to row 12 km upstream ⇒ speed of u/s = 36 km/hr. Also, time taken for u/s is 1/3 more than for d/s.
https://www.youtube.com/watch?v=SR9f1RYqWWU